In order to improve internal cooling performance and efficiency by means of introducing outside air of an optical disc drive without using a fan, an optical disc drive of the invention includes a tray movable for the sake of mounting and dismounting a disc, a disc rotation mechanism arranged at the center to rotate the disc, and a pickup arranged on a backside of the center to write and read the disc within a housing. The tray has an opening at its center and partitions the housing in a vertical direction. The optical disc drive is arranged with a first opening for inhaling outside air in a height range between the bottom surface of the tray and the proximity to the bottom end of the pickup on a back surface or a side surface around a corner on a right side viewed from the backside of the housing, and a second opening for exhausting internal air, arranged higher than a top surface of the tray on the back surface or a side surface around a corner on a left side viewed from the backside.